Cadmium Removal from Contaminated Soil by Electro-Kinetic Method
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Environmental Engineering Department, Mustansiriyah University, Baghdad, Iraq
Water Resources Engineering Department, College of Engineering, University of Baghdad, Baghdad, Iraq
Laith Hamdan Hawal   

Environmental Engineering Department, Mustansiriyah University, Baghdad, Iraq
J. Ecol. Eng. 2023; 24(1):79–86
For this study, an electro kinetic method used to eliminate cadmium from the polluted soil. This method is useful at low permeability medium. Several experiments were conducted with variable operating circumstances, using different pH purging solutions. Rice husks were used in this work as an adsorbent medium available and free of charge to counteract the reverse osmosis process that occurs and affects the work efficiency. The final results after the end of the practical experiments of this process showed that the percentages of the removal process began to increase after the pH gradually decreases. The pH of the solution for the three experiments conducted was 3, 6 and 9, respectively. The best removal rate was 68% in this process at pH 3 ; when compared with the second and third tests at pH 6 and 9, the removal ratios were (58%) and (51.5%), respectively. It was discovered that the cadmium removal rate began to decrease along with voltage. At 30 volts the removal rates were (68%), whereas 20 volts they were (66%). Rice husks have been shown to be an effective adsorbent for counteracting reverse osmosis. Therefore, it can be successfully used as an adsorbent medium.